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Finding the Third Proportional to 178,146 and 266,355

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Solution

The third proportional to 178,146 and 266,355 is: 398,240.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,146 : 266,355 = 266,355 : x
  2. Step 2: Convert to fraction form
    178,146/266,355 = 266,355/x
  3. Step 3: Cross multiply
    178,146x = 266,355 × 266,355
  4. Step 4: Simplify right side
    178,146x = 70,944,986,025
  5. Step 5: Solve for x
    x = 70,944,986,025/178,146
  6. Step 6: Final answer
    x = 398,240.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.